Sara S. Sparrow, Ph.D, is Professor of Psychology and Chief Psychologist at Yale University's Child Study Center. Dr Sparrow is the author of more than 100 articles and chapters in the fields of psychological assessment and developmental disabilities, and is the senior author of the Vineland Adaptive Behavior Scales, one of the most widely used psychological instruments available. Her main research interests involve the assessment of adaptive behaviour, child neuropsychology and developmental disabilities.